Abstract:Composite rock mass of underground chambers is alternatively stratified and horizontal bedding in Xilongchi. Geological factors of chambers interact during excavation process. The comprehensive stability of rock mass induced by couple factors in complex environment is analyzed. The stability and deformation of rock mass near the wall of houses are determined by using several measurements. The characteristics of layer composite rock mass deformation are obtained. Through the calculation examples of an underground opening,the dynamic states of the surrounding rock are investigated,and some conclusions are drawn finally. Case study shows that the calculated displacements by the method agree well with the measured values. The results provide a reliable basis for project construction.